


Detailed graphic and text explanation of the steps to install multiple PHP under windows
This article will introduce to you how to install multiple php in the window system. Here I will introduce it to you in the form of pictures and texts. I hope it will be helpful to friends in need~
Install multiple windows php
Introduction
PHP (PHP: Hypertext Preprocessor) is a "hypertext preprocessor". It is a scripting language executed on the server side. It is especially suitable for web development and can be embedded. in HTML. PHP syntax learned the C language, absorbed the characteristics of multiple languages of Java and Perl to develop its own unique syntax, and continued to improve itself based on their strengths, such as Java's object-oriented programming. The main goal of the language was originally created to make Developers quickly write high-quality web sites. PHP supports both object-oriented and process-oriented development, and is very flexible in use. [Recommended learning: PHP video tutorial]
Create PHP multi-version bat
php81.bat
@"D:\phpstudy_pro\Extensions\php\php8.1.1nts\php.exe" %*
Add user environment variables
Restart to see the effect
Running mechanism
There are two common operating modes of PHP, namely php-fpm and php-cli. When PHP chooses to run in php-fpm mode, all variables are page-level, whether they are global variables or static members of the class, they will be cleared after the page is executed. When running in php-cli mode, the program can be resident in memory. Various variables and database connections can be stored in memory for a long time to realize resource reuse. The performance can be greatly improved. Although php-cli is more complex to develop, it can be obtained Higher performance requires a higher level of development for developers. A more common mode is to write a cli framework in combination with swoole components. Various variables can be saved in a cross-process high-performance shared memory Table, which can be developed to support Hot-start php-cli is reliable for various application systems.
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